Clipper and mower attachment for chain saws



June 23, 1953 w E. A. HAYDEN CLIPPER AND MOWER ATTACHMENT FOR CHAIN SAWS Filed Oct. 6, 1950 ATTORNEYS- Patented June 23, 1953 CLIPPER AND MOWER ATTACHMENT FOR CHAIN SAWS Ernest A. Hayden, Callahan, Calif.

Application October 6, 1950, Serial No. 188,831

2. Claims. (01. 143-32) This invention relates to attachments mountable upon the blade, bar, or guide plate of a conventional chain saw, and adapting said chain-saw for mowing brush, sawing limbs, cutting wood, as well as for many other uses additional to its main function as a timber cutting tool.

In considering the need for an attachment of the type stated, it is believed worthy of note that when the cutting of brush, vines, hedge growth, or small limbs is attempted with a power chain-saw, and when such cutting is attempted at some distance from the regular chain-saw bumper shoe, the brush or vines tend to hang onto the saw chain and throw off or derail the chain from the chain-saw blade or bar.

As a result it has been impracticable and in fact virtually impossible to attempt this type of cutting with a chain-saw, except with a very short blade and=a cutting chain of fine toothed construction.

The main object of the present invention, accordingly, has been to adapt a conventional timber cutting chain-saw so as to increase its versatility and adaptability for the performance of other tasks, by the provision of means removably attachable to said chain-saw and adapting it specifically for the cutting of growths of the type stated.

A second important object is to provide attachments as described which nevertheless are so inexpensive as to give the desirable added functions to the chain-saw at a minimum of cost as compared to the decided benefits obtained.

Still another object is to provide attachments of the character stated which are swiftly attachable to or detachable from a chain-saw blade, so that in a matter of a few minutes, said blade can be adapted for timber cutting or for brush cutting, as desired.

Yet another object is to provide attachments of the character stated which can be mounted in adjusted positions upon the chain-saw blade, so, as to be positioned at the most appropriate angle for the performance of a particular task.

Still another object is to provide attachments of the character stated which are attachable to or detachable from the chain-saw bar without the necessity of removal of the bar or of the chain extending therearound, and which additionally will not require modification of conventional chain-saw construction.

Still another object is to provide attachments of the character stated which will in themselves comprise guides through which the chain-saw runs in a manner to prevent derailing of the chain.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawings Fig. 1 is a top plan view of a chain-saw formed in accordance with the conventional design in Widespread use today, and equipped with attachments formed in accordance with the present invention.

Fig. 2 is an enlarged side elevation of one of the attachments, a portion being broken away.

Fig. 3 is an edge elevational view.

Fig. 4 is a section, still further enlarged, on line 4-4 of Fig. 3.

Fig. 5 is a fragmental elevational view of the opposite side of the saw shown by Fig. 1 of the drawing.

Referring to the drawings in detail, a conventional chain-saw motor is designated i, the saw including the swingable chain-saw blade or bar 2 around which travels the saw chain 3, the direction of travel being indicated by the arrows in Fig. 1.

The chain-saw illustrated is of thoroughly conventional construction, to which the invention is readily applicable. The invention is equally applicable to other chain-saws commercially popular today, since all of these are provided with chain-saw bars and saw chains 2 and 3 respectively, which in general shape and manner of function are all approximately the same or at least closely related.

In an event, a chain-saw as described is normally used for timber cutting operations, being in widespread use in the falling of large trees, and includes a stop 3 depending from the tool.

In accordance with the present invention, if it is desired to use the chain-saw for cutting brush, hedge growth, sawing limbs off trees, or the other light sawing operations to which it might be desired to apply the chain-saw, it is necessary simply to attach a pluralit of spaced bumpers each of which includes a body portion 4 which in the present instance, but not necessarily, is of approximately rectangular cross sectional configuration. The body portion is integral at opposite ends with stops 5 and 6 respectively, and by reference to Figs. 2 and 3, it may be noted that in the preferred illustrated example of the invention, the stops are pointed, the respective opposite side walls tapering along curving lines, and it may be further noted that the stops are bodily inclined at an angle of approximately 10 to the longitudinal axis of the body portion 4. Of further importance is the fact that the stops 5 are inclined oppositely to the stops 6, for a purpose which will presently be made apparent.

Formed in and extended longitudinally of the body portion 4 is an elongated slot 1 proportioned to receive the chain-saw bar or blade 2, the slot 1 being formed at opposite ends with an enlargement 8 for receiving the saw chain, the enlargement 8 in turn merging into a still further enlarged end portion 9 extending part way into the pointed stop member at the end of the body portion, and proportioned as to width to receive the teeth of said saw chain. 1

Formed in the body portion 4, and extending transversely thereacross at longitudinally spaced intervals in the body portion, are openings ID for receiving fastening means ll, said fastening means extending into the chain-saw blade for the purpose of securing the bumpers fixedly in position upon said blade. In this connection, I believe it will be readily apparent that although the bumpers are shown at full right angles to a line extending longitudinally and centrally of the chain-saw blade, it would be easily possible to secure said bumpers in adjusted positions in which they are disposed obliquely to said longitudinal center line, by the mere provision of additional screw-receiving openings in the chain-saw blade, so located as to fix the bumpers at specified angles, as for example 45. In this connection, it has been found that in the illustrated positions, the chain-saw is particularly well adapted for mowing brush or hedge growth. However, when used to cut limbs off trees or when used to saw lumber, it would be preferable to dispose said bumpers obliquely to the longitudinal center line at angles of approximately 45.

In any event, the pointed stop members 5 and 6 at opposite ends of the bumpers project beyond opposite sides of the chain-saw blade 2, and the chains travel directly through said pointed stops, the stops serving to prevent derailing of the saw chain during brush cutting operations, which derailing has heretofore prevented effective use of chain-saws for these purposes. Additionally, the stops serve as abutments which engage the brush, vines, or limbs, in a manner to hold them in position to be cut by the saw chain.

The inclination of the stops is also of importance, and it will be seen that the inclined stops are inclined away from the motor of the chainsaw on the side of the blade on which the saw chain is travelling toward the motor, and that they are inclined away from the motor on the opposite side of the blade. This inclination has been found to eliminate or substantially prevent the tendency of the saw chain to grab when small material is being out.

In use, the operator simply gasps the chainsaw in the usual way, and swings it through the 4 brush in the same manner as one would swing a scythe. As the chain-saw blade swings around in one direction, the inclined stops engage the brush and cause it to be out, then, on the return travel of the swinging chain-saw blade, the stops 6 on the opposite side of the blade act in the same manner to complete the eflicient and full cuttin of the .brush.

If the chain-saw is to be used again in timber cutting operations, the bumpers are swiftly removed by removal of the fastening elements, ll.

Mounting of the bumpers on the chain-saw is achieved simply by slipping them in turn over the 1 free or left hand end of the chain-saw blade as seen in Fig. 1;, when they have been adjusted in longitudinally spaced relationship upon the chainsaw' blade, they are secured in said position.

What is claimed is:

1. As a new article of manufacture a stop adapted to be detachably mounted on the saw blade of a conventional timber saw having saw teeth mounted on the blade to move in. a closed path around the perimeter thereof, said sto comprising an elongated body of substantially square cross section, said body having an elongated longitudinally extending saw blade and tooth receiving slot extending therethrough, the portions of the body between opposite ends thereof and opposite ends of the slot being oppositely inclined as they recede from the slot, and the sides of the inclined portions of the body lying along intersecting arcuate paths which ccnvergeas they recede from the body to form brush parting points at opposite ends of th body.

2. In a power actuated timberv saw of the type having an elongated flat relatively thin saw blade, an endless chain carrying outwardly extending saw teeth mounted on the blade to move in a closed path around the perimeter thereof, means carried by the blade adjacent one end thereof for driving the chain and moving the saw teeth, and a stop carried by the saw blade and extending outwardly therefrom adjacent the end thereof carrying a driving means, means for converting the saw into an implement suitable for mowing downv brush or the like comprising spaced elongated stops having elongated longitudinall extending saw blade receiving slots extending therethrough, and the portionsof the stops between the ends of the slots and the ends of the stops converging as they recede from the saw blade to form brush penetrating points.

ERNEST A. HAYDEN.

References Cited in the file of this patent UNITED STATES PATENTS Mall et al Sept. 1, 1951 

